CentOS to RHEL Migration

Summary

Lab Document CentOS to RedHat Migration

Major Release Cycles and Migration Importance

- Red Hat has a major release every six months, emphasizing stability, security, and performance.

- Migration is crucial to avoid vulnerabilities due to feature release delays from Fedora to RHEL.

- CentOS Stream and End of Life

- CentOS 7/8 & RHEL 7 have reached or will reach end of life.

- Migration from CentOS Stream isn't supported due to its rolling nature.

- Migration Challenges and Solutions

- Challenges include support, security certifications, and limited third-party ecosystem.

- Red Hat offers solutions like management tools, analytics, security resources, and lifecycle support.

- Migration Process Overview

- The process involves pre-upgrade analysis, upgrade, and commit phases.

- Analysis generates a report, upgrade reinstalls RHEL packages, and commit allows rollback.

- Migration Tools and Integration

- Tools like convert2rhel and LEAPP aid migration and in-place upgrades.

- Red Hat Insights and Satellite offer orchestration options.

- Satellite Conversion Toolkit assists in connecting and migrating CentOS instances.

- In-Place Upgrade with LEAPP

- LEAPP facilitates in-place upgrades from RHEL 7 to 8, then to 9.

- It handles package conversions and configurations.

- Developer Subscriptions and Consulting

- Developer subscriptions and consulting are available for assistance.

Migration Overview:

- Process involves updating CentOS, using convert2rhel, ensuring compatibility, and switching repositories.

In-Place Upgrade:

- LEAPP facilitates upgrades with pre-analysis and configuration handling.

Extended Support:

- ELS for RHEL 7 extends support for critical fixes.